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#include "cmdline.h"
#include "printdata.h"
#include "stock.h"
#include <iostream>
#include <cstdio>
using namespace std;
int
main(int argc, char *argv[])
{
// Get database access parameters from command line
mysqlpp::examples::CommandLine cmdline(argc, argv);
if (!cmdline) {
return 1;
}
try {
// Establish the connection to the database server.
mysqlpp::Connection con(mysqlpp::examples::db_name,
cmdline.server(), cmdline.user(), cmdline.pass());
// Show initial state
mysqlpp::Query query = con.query();
cout << "Initial state of stock table:" << endl;
print_stock_table(query);
// Insert a few rows in a single transaction set
{
// Use a higher level of transaction isolation than MySQL
// offers by default. This trades some speed for more
// predictable behavior. We've set it to affect all
// transactions started through this DB server connection,
// so it affects the next block, too, even if we don't
// commit this one.
mysqlpp::Transaction trans(con,
mysqlpp::Transaction::serializable,
mysqlpp::Transaction::session);
stock row("Sauerkraut", 42, 1.2, 0.75,
mysqlpp::sql_date("2006-03-06"), mysqlpp::null);
query.insert(row);
query.execute();
cout << "\nRow inserted, but not committed." << endl;
cout << "Verify this with another program (e.g. simple1), "
"then hit Enter." << endl;
getchar();
cout << "\nCommitting transaction gives us:" << endl;
trans.commit();
print_stock_table(query);
}
// Now let's test auto-rollback
{
// Start a new transaction, keeping the same isolation level
// we set above, since it was set to affect the session.
mysqlpp::Transaction trans(con);
cout << "\nNow adding catsup to the database..." << endl;
stock row("Catsup", 3, 3.9, 2.99,
mysqlpp::sql_date("2006-03-06"), mysqlpp::null);
query.insert(row);
query.execute();
}
cout << "\nNo, yuck! We don't like catsup. Rolling it back:" <<
endl;
print_stock_table(query);
}
catch (const mysqlpp::BadQuery& er) {
// Handle any query errors
cerr << "Query error: " << er.what() << endl;
return -1;
}
catch (const mysqlpp::BadConversion& er) {
// Handle bad conversions
cerr << "Conversion error: " << er.what() << endl <<
"\tretrieved data size: " << er.retrieved <<
", actual size: " << er.actual_size << endl;
return -1;
}
catch (const mysqlpp::Exception& er) {
// Catch-all for any other MySQL++ exceptions
cerr << "Error: " << er.what() << endl;
return -1;
}
return 0;
}
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